The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2016
Filed:
May. 21, 2010
Tom Inukai, Gaithersburg, MD (US);
Tom Inukai, Gaithersburg, MD (US);
VIASAT, INC., Carlsbad, CA (US);
Abstract
Embodiments provide systems, devices, and methods for determining acquisition guard times and acquisition control parameters or distance metrics for terminals in a satellite communication network using triangulation and single terminal ranging. A terminal or multiple terminals from the network may be selected as ranging terminals; the terminals may include normal user terminals used for determining a satellite position or a satellite distance. Ranging terminals may first enter a network and synchronize to TDMA frame timing by adjusting the acquisition control parameters. An adjusted acquisition control parameter may also be called a transmit timing control parameter. A satellite position or a distance difference between a real-time and a nominal satellite position may be estimated from timing control parameters. Information about the satellite position and/or the distance difference in satellite position may then be used to reduce acquisition guard times for other terminals using various techniques to compute acquisition control parameters.